package com.wangshuo.webadmin.service.impl;

import com.wangshuo.webadmin.common.MinioProperties;
import com.wangshuo.webadmin.service.FileService;
import io.minio.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioProperties minioProperties;
    @Autowired
    private MinioClient minioClient;
    @Override
    public String upload(MultipartFile file){
        try {
            boolean bucketExists=minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
            if(!bucketExists){
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(createBucketPolicyConfig(minioProperties.getBucketName())).build());
            }
            String fileName=new SimpleDateFormat("yyyyMMdd").format(new Date())+"/"+ UUID.randomUUID()+"-"+file.getOriginalFilename();
            minioClient.putObject(PutObjectArgs.builder().bucket(minioProperties.getBucketName()).object(fileName).stream(file.getInputStream(),file.getSize(),-1).contentType(file.getContentType()).build());
            return String.join("/",minioProperties.getEndpoint(),minioProperties.getBucketName(),fileName);

        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
    }

    private String createBucketPolicyConfig(String bucketName) {
       return """
                             {
                               "Statement" : [ {
                                 "Action" : "s3:GetObject",
                                 "Effect" : "Allow",
                                 "Principal" : "*",
                                 "Resource" : "arn:aws:s3:::%s/*"
                               } ],
                               "Version" : "2012-10-17"
                             }
                             """.formatted(bucketName);
    }


}
